<template>
    <div>
      <!-- Header 区域 -->
      <van-nav-bar fixed title="文章详情" left-arrow @click-left="$router.back()" />
      <van-loading color="#1989fa" v-if="Object.keys(artObj).length === 0">疯狂加载中...</van-loading>
      <div v-else>
      <!-- 文章信息区域 -->
        <div class="article-container">
          <!-- 文章标题 -->
          <h1 class="art-title">{{ artObj.title }}</h1>

          <!-- 用户信息 -->
          <van-cell center :title="artObj.aut_name" :label="formatDate(artObj.pubdate)">
            <template #icon>
              <img :src="artObj.aut_photo" alt="" class="avatar">
            </template>
            <template #default>
              <div>
                <van-button
                type="info" size="mini"
                v-if="artObj.is_followed === true"
                @click="followedFn(true)">已关注</van-button>
                <van-button icon="plus" type="info"
                size="mini" plain v-else
                @click="followedFn(false)">关注</van-button>
              </div>
            </template>
          </van-cell>

          <!-- 分割线 -->
          <van-divider></van-divider>

          <!-- 文章内容 -->
          <div class="art-content" v-html="artObj.content"></div>

          <!-- 分割线 -->
          <van-divider>End</van-divider>

          <!-- 点赞 -->
          <!-- 用户对文章的态度, -1: 无态度，0-不喜欢，1-点赞 -->
          <div class="like-box">
            <van-button icon="good-job" type="danger"
            size="small" v-if="artObj.attitude===1"
            @click="loveFn(true)">已点赞</van-button>
            <van-button icon="good-job-o" type="danger"
            plain size="small" v-else
            @click="loveFn(false)">点赞</van-button>
          </div>
        </div>
        <!-- 文章评论区域 -->
        <div>
          <commentList></commentList>
        </div>
      </div>
    </div>
  </template>

<script>
import CommentList from './CommentList.vue'
import {
  detailAPI, userFollowAPI, userUnFollowAPI, likeArticleAPI,
  unLikeArticleAPI
} from '@/api'
import { timeAgo } from '@/utils/date'
export default {
  name: 'ArticleDetail',
  data () {
    return {
      artObj: {} // 文章对象
    }
  },
  async created () {
    const res = await detailAPI({ artId: this.$route.query.art_id })
    // console.log(res)
    this.artObj = res.data.data
  },
  methods: {
    formatDate: timeAgo,
    // 关注/取关 -> 作者
    async followedFn (bool) {
      if (bool === true) {
        // 用户点了已关注按钮,取消关注
        this.artObj.is_followed = false
        const res = await userUnFollowAPI({ userId: this.artObj.aut_id })
        console.log(res)
      } else { // 用户点了关注按钮
        this.artObj.is_followed = true
        const res = await userFollowAPI({ userId: this.artObj.aut_id })
        console.log(res)
      }
    },
    // 点赞/取消点赞 -> 文章
    async loveFn (bool) {
      if (bool === true) {
        this.artObj.attitude = 0
        const res = await unLikeArticleAPI({ artId: this.artObj.art_id })
        console.log(res)
      } else {
        this.artObj.attitude = 1
        const res = await likeArticleAPI({ artId: this.artObj.art_id })
        console.log(res)
      }
    }
  },
  components: {
    CommentList
  }

}
</script>

  <style scoped lang="less">
  .article-container {
    padding: 10px;
    margin-top: 46px;
  }
  .art-title {
    font-size: 16px;
    font-weight: bold;
    margin: 10px 0;
  }

  .art-content {
    font-size: 12px;
    line-height: 24px;
    width: 100%;
    overflow-x: scroll;
    word-break: break-all;
      /deep/ img{
          width: 100%;
        }
      /deep/ pre {
          white-space: pre-wrap;
          word-wrap: break-word;
      }
  }

  .van-cell {
    padding: 5px 0;
    &::after {
      display: none;
    }
  }

  .avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: #f8f8f8;
    margin-right: 5px;
    border: none;
  }

  .like-box {
    display: flex;
    justify-content: center;
  }
  // 加载中居中样式
  .van-loading{
    padding-top: 46px;
    text-align: center;
  }
  </style>
